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Journal articles on the topic 'Water-and-oil inverse emulsion'

Author: Grafiati

Published: 7 September 2021

Last updated: 29 July 2025

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1

Feofilaktova, O., Galina Chekryga, and Nataliya Zavorohina. "ANALYSIS OF THE EMULSION FOOD SYSTEMS MICROBIOLOGICAL INDICATORS DYNAMICS IN STORAGE." Bulletin of KSAU, no. 1 (December 24, 2024): 178–84. https://doi.org/10.36718/1819-4036-2023-1-178-184.

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The purpose of the study is to analyze the microbiological safety indicators of double emulsion food systems during storage, taking into account the influence of ultrasonic homogenization and storage processes. The study of sanitary-significant microbiological safety indicators (QMAFAnM, BGKP), pathogenic (Salomonella) and spoilage microorganisms (molds and yeasts) of double emulsion food systems water-oil-water and oil-water-oil obtained by ultrasonic homogenization, and control samples – direct and reverse emulsions obtained in the traditional way, were carried out using standard methods aft

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2

Even, William R., and Donald P. Gregory. "Emulsion-Derived Foams Preparation, Properties, and Application." MRS Bulletin 19, no. 4 (1994): 29–33. http://dx.doi.org/10.1557/s0883769400039488.

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Porous polymeric foams are well-known materials and have been produced by a wide variety of techniques ranging from leaching soluble fillers through gas-blowing to phase separation. Although these materials are widely used, their structure is often irregular and difficult to control. However, a novel method for producing porous materials with a more regular structure has been developed based on high internal phase emulsions (HIPE). These foams are called emulsion-derived foams and are commercially known as Polyhipe® (Unilever) polymers.If one takes a liquid oil, introduces water and a suitable

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3

Ma, Yong Sheng, Lin Tong Wang, Xian Hui Sun, and Jiang Qiang Zhang. "Stability Study of Chitosan-g-AM Inverse Emulsion." Advanced Materials Research 450-451 (January 2012): 360–63. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.360.

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Graft copolymerization of chitosan and vinyl monomer (such as acryamide and acrylic acid) and application study of the copolymer used as papermaking additive were paid more and more attention in papermaking chemical industry. Chitosan and acrylamide(AM) monomer were graft copolymerizing in inverse emulsion. Several factors such as oil-water proportion, mass ratio of chitosan and AM, emulsifier types and ratio, and initiator concentration that affect the stability of inverse emulsion were elementarily studied. Stable latex can be gained when reaction condition was that the volume ratio of oil p

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4

Chekantseva, Liliya V., Vladimir N. Manzhay, Yulia V. Loskutova, and Daniil A. Zubarev. "Rheological properties of water-oil emulsions of Archinskoe oil deposit." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 335, no. 11 (2024): 133–41. http://dx.doi.org/10.18799/24131830/2024/11/4508.

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Relevance. The development of new methods for regulating the rheological properties of water-oil emulsion using thermal and chemical methods will allow reducing the viscosity of oil well products and energy consumption for pumping hydrocarbon mixtures. Aim. To determine the activation energy of viscous flow and particle sizes of the internal phase of the initial emulsion of the Archinskoe deposit and the emulsion with an introduced demulsifier. Methods. All experiments required to investigate the rheological properties of colloidal disperse systems were performed using HAAKE Viscotester iQ rot

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5

Liu, Zheyu, Shruti Mendiratta, Xin Chen, Jian Zhang, and Yiqiang Li. "Investigation of inverse emulsion assisted controlled release of polyacrylamides for enhanced oil recovery." RSC Advances 9, no. 21 (2019): 11968–77. http://dx.doi.org/10.1039/c9ra00465c.

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A high-molecular-weight polyacrylamide-based polymer encapsulated in water-in-oil emulsion is proposed for enhanced oil recovery. Its high viscosity, viscoelasticity and plugging capacity with aging time are beneficial for oil mobilization.

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6

Kong, Linggen, James K. Beattie, and Robert J. Hunter. "Electroacoustic Study of n-Hexadecane/Water Emulsions." Australian Journal of Chemistry 54, no. 8 (2001): 503. http://dx.doi.org/10.1071/ch01148.

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n-Hexadecane-in-water emulsions were investigated by electroacoustics using a prototype of an AcoustoSizer-II apparatus. The emulsions were formed by passing the stirred oil/water mixture through a homogenizer in the presence of sodium dodecyl sulfate (SDS) at natural pH (6–7). With increasing oil-volume fraction, the particle size increased linearly after 5 and also after 20 passages through the homogenizer, suggesting that surface energy was determining particle size. For systems in which the surfactant concentration was limited, the particle size after 20 passages approached the value dicta

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7

Lykov, V. V., L. Sh Makhmudova, and K. Sh Laieva. "STABILIZATION OF THE FIELD WATER-OIL EMULSION BY ELECTROHYDRAULIC IMPACT WITH A 15-FOLD DECREASE IN VISCOSITY." Petroleum Engineering 21, no. 4 (2023): 142–53. http://dx.doi.org/10.17122/ngdelo-2023-4-142-153.

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For the first time, the inverse, no less urgent, task of influencing the field oil-water emulsion (OWE) has been solved — not to destroy the OWE and decompose it into oil and water (a direct task), but to create a stable emulsion, while its viscosity should be significantlyreduced. The electrohydraulic effect was used to influence on OWE — the formation of a shock wave as a result of a pulsed plasma electrohydraulic discharge (PAED) in a liquid (electrohydraulic shock — E-shock). The study was carried out on crude water-oil emulsions of the Taylakovsky field of the Slavneft-Megionneftegas-Gazp

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Kalyuzhnaya, Dariya, Evgeniy Sokolov, Anastasia Vasilyeva, Irina Sutarina, and Petr Ryapolov. "Dynamics of Nonmagnetic and Magnetic Emulsions in Microchannels of Various Materials." Fluids 8, no. 2 (2023): 42. http://dx.doi.org/10.3390/fluids8020042.

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The formation of droplets in microchannels (droplet microfluidics) has a large number of applications, such as in micro-dosing and gas meters. This paper considers the dynamics of direct and inverse emulsions based on water, polydimethylsiloxane, and synthetic and mineral oil in microfluidic chips based on two technologies: glass–parafilm–glass sandwich structures and removable scaffold in a silicone compound. It is shown that wettability, roughness and chip wall material; channel thickness; magnetic fluid flow rate; and magnetic field strength affect the size of emulsion droplets formed in a

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9

Rakhimov, A. A., and A. A. Valiev. "Influence of the aggregate state of the dispersed phase and ultrasonic effect on the flow of emulsions in microchannels." Proceedings of the Mavlyutov Institute of Mechanics 12, no. 2 (2017): 187–94. http://dx.doi.org/10.21662/uim2017.2.028.

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The paper presents the results of hydrodynamic studies of inverse water hydrocarbon dispersions: emulsions and, prepared from it by freezing the dispersed phase, suspension. In addition to the high viscosity of the emulsion, a much higher viscosity of the carrier phase, the success of the use of invert emulsions in the oil industry is due to the dynamic blocking effect. The effect is that the flow velocity in the capillary structures and cracks decreases by 3-4 orders of magnitude, in spite of the constantly acting pressure drop. The work shows an increase in viscosity with decreasing temperat

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10

Habib, Hichour Mohamed El, and Hammadi Larbi. "Impact of formulation on the rheological and physiochemical properties of water in oil emulsion: application on drilling mud." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 3 (2024): e12873. https://doi.org/10.54021/seesv5n3-087.

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One of the main uses of water in oil emulsions in the petroleum industry is oil-based drilling fluids due to their rheological characteristics and various functions to keep a good drilling process. To achieve these characteristics many researches have been made to establish various formulations to reply to the technical needs and also to reduce the cost of these drilling fluids and their environmental effects. In this study, we prepared five formulations of water in oil emulsions using the additives versawet and versacoat as emulsifiers, organophilic clay VG69, and calcium carbonate CaCO3. Dif

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11

Cao, Ya Feng, Kai Liu, Zhao Li Liu, Feng Zhi Tan, and Yuan Li. "Synthesis of Superabsorbent Polymer in Inverse Emulsion via Post-Cross-Linking." Advanced Materials Research 430-432 (January 2012): 443–48. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.443.

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Firstly a graft copolymer was synthesized by graft copolymerization of starch with acrylamide (AM) in inverse emulsion, and then the copolymer was deaminated and post-cross-linked by heating to produce three-dimensional superabsorbent polymer. The effect of initiate conditions, composition and concentration of emulsifier, cross-linking methods and conditions were investigated. The results show that the optimized conditions are as follows: The mixture of (NH4)2S2O8-(NH2)2CO are used as initiators, and molar ratio of initiators and acrylamide is 1.4∶105; The mixture of Span20 and Tween80 with th

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12

Gao, Wen Yuan, Xing Xin Jia, Mei Hong Niu, Nai Ling Tang, and Zhi Qiang Hu. "Preparation of Nano-TiO₂in Inverse Micro-Emulsion System with Compound Surfactant." Advanced Materials Research 412 (November 2011): 25–31. http://dx.doi.org/10.4028/www.scientific.net/amr.412.25.

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The nanosized TiO2 is prepared by micro-emulsion process in the system of cyclohexane / [Span80 combined with OP-10] / water with TiCl4 as raw material. The selection method of the surface-active agents was investigated and the influence of amount of surfactant, water / oil ratio and concentration of reactants on the particle size were discussed in this work. The temperature schedule, crystal structure, particle size distribution and appearance of the nanocrystalline TiO2 were analyzed by differential thermal analysis (DTA) combined with X-ray diffraction (XRD), laser particle size analysis (L

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13

Ma, Yong Sheng, and Lin Tong Wang. "Study on Preparation under Microwave Radiation and Application of Chitosan Grafted Poly(acrylamide) Inverse Latex." Advanced Materials Research 233-235 (May 2011): 1704–7. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1704.

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Inverse emulsion graft copolymerization of chitosan and acrylamide monomer under microwave radiation was studied. It was shown that when the microwave radiation power was 300W, the microwave radiation time was 150S, the volume ratio of oil phase and water phase was 1:1, the weight ratio of chitosan and AM was 1:7, the initiator concentration was 0.67mmol/L, the dosage of emulsification agent was 7% of the weight of oil phase and the weight ratio of Span-80 and OP-10 was 6:4, stable inverse latex could be gained. A good dry strengthening effect had been obtained by applying the above mentioned

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14

Zhang, Dong, Runnan Zhou, Xinren Fang, and Yue Qiu. "Investigation on the preparation of nanoparticles by inverse micro-emulsion polymerization for enhanced oil recovery." Materials Express 9, no. 9 (2019): 1062–66. http://dx.doi.org/10.1166/mex.2019.1605.

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Polyacrylamide nanoparticles attracted increasing interest as profile control agents in oilfield development owing to the characteristics of deformation and continuous expansion in core pore. In this article, the structure and morphology of polyacrylamide nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). And the fluorescence microscopy and core displacement equipment were used to evaluate the properties of the expansion and plugging properties. Results showed that the nanoparticles prepared by inverse emulsion polymerizat

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15

Capek, Ignác. "Inverse Emulsion Polymerization of Acrylamide Initiated by Oil- and Water-soluble Initiators: Effect of Emulsifier Concentration." Polymer Journal 36, no. 10 (2004): 793–803. http://dx.doi.org/10.1295/polymj.36.793.

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16

Yao, Ying, Ying Ying Shen, and Xue Yan Du. "Preparation and Characterization of Silane Modified Fe₃O₄ Nanoparticles by Reverse Micro-Emulsion." Advanced Materials Research 716 (July 2013): 199–202. http://dx.doi.org/10.4028/www.scientific.net/amr.716.199.

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Hydrophilic Fe3O4nanoparticles (NPs) were prepared by reverse micro-emulsion, in which OP-10 as surfactant, n-butanol as co-surfactant, cyclohexane as oil phase, FeSO4·7H2O and FeCl3·6H2O aqueous solution as water phase. The as-prepared Fe3O4NPs were functionalized by using of silane coupling agent 3-glycidoxypropyltrimethoxysilane (KH-570) to promote adhesion at the inorganic and organic interface (s). From the experimental results, it was found that the modified Fe3O4NPs were of inverse spinel crystalline structure, and both Fe3O4and modified Fe3O4NPs exhibited super-paramagnetic behavior du

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17

Takase, Hayato, Nozomi Watanabe, Koichiro Shiomori, et al. "Preparation of Hydrophobic Monolithic Supermacroporous Cryogel Particles for the Separation of Stabilized Oil-in-Water Emulsion." Colloids and Interfaces 7, no. 1 (2023): 9. http://dx.doi.org/10.3390/colloids7010009.

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Here, we prepared hydrophobic cryogel particles with monolithic supermacropores based on poly-trimethylolpropane trimethacrylate (pTrim) by combining the inverse Leidenfrost effect and cryo-polymerization technique. The hydrophobic cryogel particles prepared by adopting this method demonstrated the separation of the stabilized O/W emulsion with surfactant. The prepared cryogel particles were characterized in terms of macroscopic shape and porous structure. It was found that the cryogel particles had a narrow size distribution and a monolithic supermacroporous structure. The hydrophobicity of t

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18

Natour, Suzana, Anat Levi-Zada, and Raed Abu-Reziq. "Magnetic Polyurea Nano-Capsules Synthesized via Interfacial Polymerization in Inverse Nano-Emulsion." Molecules 24, no. 14 (2019): 2663. http://dx.doi.org/10.3390/molecules24142663.

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Polyurea (PU) nano-capsules have received voluminous interest in various fields due to their biocompatibility, high mechanical properties, and surface functionality. By incorporating magnetic nanoparticle (MNPs) into the polyurea system, the attributes of both PU and MNPs can be combined. In this work, we describe a facile and quick method for preparing magnetic polyurea nano-capsules. Encapsulation of ionic liquid-modified magnetite nanoparticles (MNPs), with polyurea nano-capsules (PU NCs) having an average size of 5–20 nm was carried out through interfacial polycondensation between amine an

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19

Van Bavel, Nicolas, Anna-Marie Lewrenz, Travis Issler, Liping Pang, Max Anikovskiy, and Elmar J. Prenner. "Synthesis of Alginate Nanoparticles Using Hydrolyzed and Enzyme-Digested Alginate Using the Ionic Gelation and Water-in-Oil Emulsion Method." Polymers 15, no. 5 (2023): 1319. http://dx.doi.org/10.3390/polym15051319.

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Alginate nanoparticles (AlgNPs) are attracting increasing interest for a range of applications because of their good biocompatibility and their ability to be functionalized. Alginate is an easily accessible biopolymer which is readily gelled by the addition of cations such as calcium, facilitating a cost-effective and efficient production of nanoparticles. In this study, AlgNPs based on acid hydrolyzed and enzyme-digested alginate were synthesized by using ionic gelation and water-in-oil emulsification, with the goal to optimize key parameters to produce small uniform (<200 nm) AlgNPs. By t

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20

Santamaría, Esther, Naroa Lizarreta, Susana Vílchez, Carme González, and Alicia Maestro. "Formation of Microcapsules of Pullulan by Emulsion Template Mechanism: Evaluation as Vitamin C Delivery Systems." Gels 10, no. 6 (2024): 355. http://dx.doi.org/10.3390/gels10060355.

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Pullulan is a polysaccharide that has attracted the attention of scientists in recent times as a former of edible films. On the other hand, its use for the preparation of hydrogels needs more study, as well as the formation of pullulan microcapsules as active ingredient release systems for the food industry. Due to the slow gelation kinetics of pullulan with sodium trimetaphosphate (STMP), capsules cannot be formed through the conventional method of dropping into a solution of the gelling agent, as with other polysaccharides, since the pullulan chains migrate to the medium before the capsules

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21

RITZOULIS, C., D. PETRIDIS, EM DERLIKIS, K. FYTIANOS, and P. ASTERIOU. "UTILIZATION OF INVERSE WATER-IN-OIL EMULSIONS AS FAT REPLACERS IN FRANKFURTER MODEL SAUSAGES: INFLUENCE OF FAT EMULSION CONTENT ON THE ORGANOLEPTIC AND MECHANICAL PROPERTIES." Journal of Texture Studies 41, no. 1 (2010): 62–74. http://dx.doi.org/10.1111/j.1745-4603.2009.00213.x.

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Boujemaa, Moussa, Remi Peters, Jiabin Luan, Yieuw Hin Mok, Shauni Keller, and Daniela A. Wilson. "A Simple Vortex-Based Method for the Generation of High-Throughput Spherical Micro- and Nanohydrogels." International Journal of Molecular Sciences 26, no. 13 (2025): 6300. https://doi.org/10.3390/ijms26136300.

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Hydrogel particles, renowned for their high water content and biocompatibility in drug delivery and tissue engineering, typically rely on complex, costly microfluidic systems to reach sub 5 µm dimensions. We present a vortex-based inverse-emulsion polymerization strategy in which UV crosslinking of polyethylene glycol diacrylate (PEGDA) dispersed in n-hexadecane and squalene yields tunable micro- and nanogels while delineating the parameters that govern particle size and uniformity. Systematic variation in surfactant concentration, vessel volume, continuous phase viscosity, vortex speed and du

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Liu, Kecheng, Ren Wang, Kesheng Rong, et al. "Synthesis and Plugging Performance of Nano-Micron Polymeric Gel Microsphere Plugging Agents for Oil-Based Drilling Fluids." Gels 9, no. 4 (2023): 290. http://dx.doi.org/10.3390/gels9040290.

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As shale gas recovery progresses to deep layers, the wellbore instability during drilling in applications of oil-based drilling fluids (OBFs) becomes increasingly severe. This research developed a plugging agent of nano-micron polymeric microspheres based on inverse emulsion polymerization. Through the single-factor analysis with respect to the permeability plugging apparatus (PPA) fluid loss of drilling fluids, the optimal synthesis conditions of polymeric microspheres (AMN) were determined. Specifically, the optimal synthesis conditions are as follows: the monomer ratio of 2-acrylamido-2-met

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24

Mardashov, Dmitry V., Mikhail K. Rogachev, Yury V. Zeigman, and Vyacheslav V. Mukhametshin. "Well Killing Technology before Workover Operation in Complicated Conditions." Energies 14, no. 3 (2021): 654. http://dx.doi.org/10.3390/en14030654.

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Well killing is an important technological stage before conducting workover operation, one of the tasks of which is to preserve and restore the natural filtration characteristics of the bottomhole formation zone (BFZ). Special attention should be paid to the choice of well killing technologies and development of wells in complicated conditions, which include abnormally low reservoir pressure, high oil-gas ratio and carbonate reservoir type. To preserve the filtration characteristics of the productive formation and prevent fluid losses in producing wells during well killing operation, blocking

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Zuykina, Yelyzaveta, Svitlana Zuykina, Marina Buryak, Liliia Vyshnevska, and Svitlana Oleynik. "Research on the development of the composition extemporaneous medicine with dexpanthenol." Annals of Mechnikov Institute, no. 1 (March 19, 2024): 39–45. https://doi.org/10.5281/zenodo.10838552.

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The prevalence of dermatological diseases is one of the problems of medical practice. Against the background of chronic stress disorders during the war, the incidence of contact dermatitis, atopic dermatitis, eczema, fungal lesions, psoriasis and other diseases has been increased. On the pharmaceutical market of Ukraine, soft dosage forms occupy approximately 10% among other drugs of industrial production. A large share also belongs to soft medicinal forms of extemporaneous production in Ukraine and abroad. The choice of the basis is depend on the physical and chemical properties of the active

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Glushchenko, Viktor, and Grigoriy Khizhnyak. "Directions for Improving the Compositions of Reverse Emulsions for Well Plugging." Недропользование 23, no. 1 (2023): 44–50. http://dx.doi.org/10.15593/2712-8008/2023.1.6.

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Well killing is the most common technological process in oil production. Inverse emulsions are used as an effective fluid in the combined killing method. At present, some potential possibilities of inverse emulsions have not been analyzed both in terms of improving their compositions and technological methods of practical implementation. The paper considers a number of promising research areas for obtaining, improving the compositions of inverted emulsions and the method of their application with injection into the bottomhole formation zone before filling the wellbore with mineralized water. N

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Li, Haoyu, Peng Mu, Jian Li, and Qingtao Wang. "Inverse desert beetle-like ZIF-8/PAN composite nanofibrous membrane for highly efficient separation of oil-in-water emulsions." Journal of Materials Chemistry A 9, no. 7 (2021): 4167–75. http://dx.doi.org/10.1039/d0ta08469g.

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Khodabandeh, Aminreza, R. Dario Arrua, Christopher T. Desire, et al. "Preparation of inverse polymerized high internal phase emulsions using an amphiphilic macro-RAFT agent as sole stabilizer." Polymer Chemistry 7, no. 9 (2016): 1803–12. http://dx.doi.org/10.1039/c5py02012c.

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Oil-in-water (‘inverse’) High Internal Phase Emulsions (HIPEs) have been prepared using an amphiphilic macro-RAFT agent with toluene as the internal dispersed phase (∼80 vol%) and an aqueous monomer solution as the continuous phase.

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Saidane, Dorra, Emilie Perrin, Fanch Cherhal, Florian Guellec, and Isabelle Capron. "Some modification of cellulose nanocrystals for functional Pickering emulsions." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2072 (2016): 20150139. http://dx.doi.org/10.1098/rsta.2015.0139.

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Cellulose nanocrystals (CNCs) are negatively charged colloidal particles well known to form highly stable surfactant-free Pickering emulsions. These particles can vary in surface charge density depending on their preparation by acid hydrolysis or applying post-treatments. CNCs with three different surface charge densities were prepared corresponding to 0.08, 0.16 and 0.64 e nm −2 , respectively. Post-treatment might also increase the surface charge density. The well-known TEMPO-mediated oxidation substitutes C 6 -hydroxyl groups by C 6 -carboxyl groups on the surface. We report that these diff

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Газизов, Н. Р. "Исследование деэмульгаторов с целью повышения эффективности добычи нефти в карбонатных коллекторах". Нефтяная провинция, № 4(40) (30 грудня 2024): 273–82. https://doi.org/10.25689/np.2024.4.273-282.

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В работе представлены результаты лабораторных исследований по определению эффективности деэмульгаторов на примере искусственных водонефтяных эмульсий с нефтью турнейского яруса нижнего карбона. В результате сравнения двух реагентов было установлено, что для данных проб наиболее эффективным оказался деэмульгатор на основе неионогенных поверхностно-активных веществ (НПАВ) ДЭ-1. Он отличается от реагента с ИПАВ (ДЭ-2) более низким удельным расходом, растворимостью как в воде, так и в нефти, что позволяет применять его в прямых и обратных эмульсиях, а также отсутствием реакции с солями и кислотами

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Газизов, Н. Р. "Исследование деэмульгаторов с целью повышения эффективности добычи нефти в карбонатных коллекторах". Нефтяная провинция, № 1(41) (30 березня 2025): 185–94. https://doi.org/10.25689/np.2025.1.185-194.

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В работе представлены результаты лабораторных исследований по определению эффективности деэмульгаторов на примере искусственных водонефтяных эмульсий с нефтью турнейского яруса нижнего карбона. В результате сравнения двух реагентов было установлено, что для данных проб наиболее эффективным оказался деэмульгатор на основе неионогенных поверхностно-активных веществ (НПАВ) ДЭ-1. Он отличается от реагента с ИПАВ (ДЭ-2) более низким удельным расходом, растворимостью как в воде, так и в нефти, что позволяет применять его в прямых и обратных эмульсиях, а также отсутствием реакции с солями и кислотами

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Elbedwehy, Ahmed M., and Ayman M. Atta. "Novel Superadsorbent Highly Porous Hydrogel Based on Arabic Gum and Acrylamide Grafts for Fast and Efficient Methylene Blue Removal." Polymers 12, no. 2 (2020): 338. http://dx.doi.org/10.3390/polym12020338.

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Environmental pollution with dyes released from industrial effluent is one of the major and most critical problems in the world. To alleviate this issue, advanced and safe materials with fast and highly efficient dye removal should be designed. Great attention has been paid recently to hydrogels based on polysaccharides such as Arabic Gum (AG) grafted with polyacrylamide (PAM) and polyacrylic acid (PAA). These materials combine the merits of natural polymers such as biodegradability and non-toxicity with the high adsorption ability of PAM and PAA towards cationic dyes such as methylene blue (M

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Rahmawati, Fitria, Indah Rizki Fitriani, and Abu Masykur. "REVERSE MICROEMULSION OF IGEPAL Co-720 SYSTEM AS MICROREACTOR FOR CdS SYNTHESIS." ALCHEMY Jurnal Penelitian Kimia 10, no. 2 (2016): 157. http://dx.doi.org/10.20961/alchemy.10.2.538.157-172.

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<p>A Research on CdS synthesis in reverse microemulsion of Igepal CO-720 system has been conducted at various weight ratio of water to surfactant. Igepal CO-720 naturally forms oil in water (o/w) emulsion type due to its high HLB (Hydrophilic -Lipophilic Balance) value. Therefore, in this research the Igepal CO-720 system was inversed into water in oil (w/o) system before it was used as microreactor for CdS synthesis. As comparison, a system of AOT (Aerosol OT; sodium bis (2-ethylhexyl) sulfosuccinate) which is naturally w/o system was also used as microreactor for CdS synthesis. The pre

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Rahmawati, Fitria, Indah Rizki Fitriani, and Abu Masykur. "REVERSE MICROEMULSION OF IGEPAL Co-720 SYSTEM AS MICROREACTOR FOR CdS SYNTHESIS." ALCHEMY Jurnal Penelitian Kimia 10, no. 2 (2016): 157. http://dx.doi.org/10.20961/alchemy.v10i2.538.

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<p>A Research on CdS synthesis in reverse microemulsion of Igepal CO-720 system has been conducted at various weight ratio of water to surfactant. Igepal CO-720 naturally forms oil in water (o/w) emulsion type due to its high HLB (Hydrophilic -Lipophilic Balance) value. Therefore, in this research the Igepal CO-720 system was inversed into water in oil (w/o) system before it was used as microreactor for CdS synthesis. As comparison, a system of AOT (Aerosol OT; sodium bis (2-ethylhexyl) sulfosuccinate) which is naturally w/o system was also used as microreactor for CdS synthesis. The pre

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Echeverría, Víctor, Gladys Monsalve, and Humberto Vidales. "Continuos treatment of oily sludge at Colombian refineries." CT&F - Ciencia, Tecnología y Futuro 2, no. 3 (2002): 61–70. http://dx.doi.org/10.29047/01225383.538.

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The Colombian Petroleum Institute -ICP-, the research and development branch of Ecopetrol has developed a unique technological package used to treat oily sludge in a continuous way. The sludge comes from a refinery with a 220 000 barrels of crude per day load, located in the Middle Madgalena River Valley in Colombia. The Technological Package allows for :a) the recovery of the hydrocarbon contained in oily wastes (up to 50%); b) the elimination of the oil contained in solid using a biodegradation process; and, c) the availability of an economically and technically feasible solution to handle o

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Farioli, Ana Sofia, Maria Victoria Martinez, Cesar Barbero, Edith Yslas, and Diego Acevedo. "The effect of oil raw material composition in the synthesis of bio‐sorbents based on inverse vulcanization on the ability to remediate hydrocarbon‐contaminated water. A novel method for decontaminating water/fuel emulsions." Journal of Applied Polymer Science, November 14, 2023. http://dx.doi.org/10.1002/app.54914.

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AbstractSolid crosslinked biopolymers made by inverse vulcanization of soybean (PSB) or sunflower (PSF) oil with sulfur are characterized and tested to decontaminate water from hydrocarbons (HC): gasoline, diesel, two lubricant oils, and water/gasoline emulsion. The physicochemical structure of the biopolymers is studied by FTIR spectroscopy, Differential scanning calorimetry, contact angle measurement, and mechanical testing. Also, the morphological structure is analyzed by scanning electron microscopy. Moreover, the polymer decontamination capability and reusability are tested gravimetricall

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Wang, Jianli, Zhongjie Du, Congju Li, Hangquan Li, and Chen Zhang. "A study on formation and stability of epoxy resin inverse concentrated water/oil emulsion." Journal of Applied Polymer Science, 2008, NA. http://dx.doi.org/10.1002/app.29099.

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Gong, Chen, Fujun Chen, and Can Kang. "Theoretical and experimental studies on the oil-based emulsion spray." Frontiers in Plant Science 14 (April 19, 2023). http://dx.doi.org/10.3389/fpls.2023.1164200.

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Oil-based emulsion is a common herbicide formulation in agricultural spray, and its atomization mechanism is different from that of water spray. In this paper, a theoretical model based on the characteristics of spray sheets was proposed to predict the spray droplet size for oil-based emulsion spray. An image processing method was used to measure droplet size distributions for different spray pressures and nozzle configurations, and the measured results were used to validate the theoretical model. The results show that oil-based emulsion spray is characterized by the web structure constituted

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Zhang, Lei, Cheng Jing, Jing Liu, and Khan Nasir. "A Study on a Copolymer Gelant With High Temperature Resistance for Conformance Control." Journal of Energy Resources Technology 140, no. 3 (2017). http://dx.doi.org/10.1115/1.4038196.

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Due to the limited temperature resistance, the deep conformance control technology of using the conventional hydrolyzed polyacrylamide (HPAM) gel failed to enhance oil recovery in high-temperature heterogeneous oil reservoirs. Therefore, it is necessary to develop a gelant with high temperature resistance to meet the demands of increasing oil production and decreasing water cut in high-temperature heterogeneous oil reservoirs. In this paper, a copolymer is first synthesized by the method of inverse emulsion polymerization using 2-acrylamide-2-tetradecyl ethyl sulfonic acid (AMC16S), acrylamide

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Dong, Lifei, Miao Wang, Jie He, Mingchen Ding, and Hun Lin. "Experimental Investigation of Self-Assembled Particles on Profile Control in the Fuyu Oilfield." Frontiers in Chemistry 9 (August 5, 2021). http://dx.doi.org/10.3389/fchem.2021.681846.

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The particle system is one of the widely used profile control agents in many oilfields, and the matching relationship between the particle and the reservoir pore throat is significant for the profile control effect. In order to enhance oil recovery after water breakthrough in the Fuyu oilfield, a self-assembled particle with some branches on the surface, compounded by inverse emulsion polymerization and added, is introduced as the profile control agent in this paper. Then the permeabilities of the water channel and the oil remaining area in the Fuyu oilfield are achieved after the statistic an

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Pahlevani, Hossein, Mahsa Baghban Salehi, Farzin Saghandali, Rouzbeh G. Moghanloo, and Vahid Taghikhani. "Profile control and oil displacement in high temperature and salinity reservoirs: Evaluation of deformable microgel system." Polymers for Advanced Technologies 35, no. 8 (2024). http://dx.doi.org/10.1002/pat.6530.

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AbstractViscoelastic microgels have been successfully used as profile control and enhanced oil recovery agents in oil reservoirs. In this paper, a novel microgel made of acrylamide monomer and 2‐Acrylamido‐2‐methylpropane sulfonic acid was synthesized using inverse emulsion polymerization. The spherical shape of microgel particles and their corresponding size distribution were confirmed by series of microscopic images. Additional tests such as morphology and swelling tests indirect characterization of structural properties via rheology tests, and viscoelastic tests of spherical microgels were

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Shen, Yanqin, Yuxue Yang, Yahao Zhao, et al. "Preparation of ammonium polyacrylate thickener via inverse emulsion polymerization: paste forming ability and rheological property." Textile Research Journal, July 12, 2023. http://dx.doi.org/10.1177/00405175231186653.

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In this work, ammonium polyacrylate (NH4PAA) thickener was synthesized by the inverse emulsion polymerization method with acrylic acid and ammonia water as the aqueous monomer, C16–C31 n-alkanes (5# white oil) as the continuous phase, Span 80/Tween 80 as composite emulsifiers, and Tween 80 as the phase inversion agent, under the action of ammonium persulfate-sodium bisulfite initiation (APS-NaHSO3) and N, N’-methylene-bis-acrylamide (MBA) crosslinking. Gel permeation chromatography and Fourier transform infrared spectroscopy provided evidence for the synthesis of NH4PAA, with a molecular weigh

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Fan, Yuheng, Weichu Yu, Wenming Shu, Ying Zhang, Yiwen Ju, and Pingtian Fan. "Synthesis and performance evaluation of low‐damage variable viscosity integrated drag reducer." Journal of Applied Polymer Science, July 3, 2024. http://dx.doi.org/10.1002/app.55925.

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AbstractTo solve problems such as inadequate proppant carrying capacity, a complex viscosity changing process, and limited environmental friendliness associated with traditional slick water fracturing fluids, a variable viscosity friction reducer called Jianghan friction reducer (JHFR) with low damage, high drag reduction, and strong proppant‐carrying capacity is prepared by inverse emulsion polymerization. The properties of JHFR are investigated by viscometer, JHFR‐II high‐temperature and high‐pressure slick water drag reduction rate tester, surface tension meter, and JHCQ Core dynamic damage

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Ayazbayeva, Aigerim, Vikram Baddam, Alexey Shakhvorostov, et al. "Amphoteric nano‐ and microgels with acrylamide backbone for potential application in oil recovery." Polymers for Advanced Technologies, August 29, 2023. http://dx.doi.org/10.1002/pat.6182.

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AbstractAmphoteric nano‐ and microgels based on acrylamide (AAm), 3‐acrylamidopropyltrimethylammonium chloride (APTAC) and 2‐acrylamido‐2‐propanesulfonate sodium salt (AMPS) were prepared via inverse emulsion polymerization in the presence of crosslinking agent—N,N′‐methylenebisacrylamide (MBAA). Several polyampholyte nano‐ and microgel samples AAm‐APTAC‐AMPS with compositions (70:15:15, 80:10:10, and 90:5:5 mol%) were obtained and they were abbreviated as AAm70‐APTAC15‐AMPS15, AAm80‐APTAC10‐AMPS10 AAm90‐APTAC5‐AMPS5 (where the lower indexes indicate the molar concentration of monomers). The n

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Yan, Yancheng, Zeyu Xue, Lianci Wu, Yumei Luo, and Xiaodong Bai. "Synthesis and Application of a Temperature Sensitive Poly(Acrylamide‐Co‐N‐Isopropylacrylamide‐Co‐Sodium P‐Styrene Sulfonate) as a New Water‐Based Drilling Fluid Plugging Agent." Journal of Applied Polymer Science, January 19, 2025. https://doi.org/10.1002/app.56733.

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ABSTRACTIn the process of oil and gas production, the failure of drilling fluid caused it to invade the formation, leading to wellbore instability. N‐isopropylacrylamide (NIPAM), acrylamide (AM), and sodium p‐styrene sulfonate (SSS) were used as raw materials, and the P(NIPAM/AM/SSS) (abbreviated as NAS) temperature‐sensitive plugging agent was synthesized by inverse emulsion polymerization. The optimum synthesis conditions were obtained using a redox initiation system. Infrared measurements and UV–visible analysis showed that the target product was successfully prepared, and NAS exhibited a l

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Wu, Yining, Haiqing Zhang, Liyuan Zhang, Yongping Huang, Mingwei Zhao, and Caili Dai. "Development of Novel Delayed Swelling Polymer Gel Particles with Salt Resistance for Enhanced In-Depth Permeability Control." SPE Journal, December 1, 2023, 1–16. http://dx.doi.org/10.2118/218394-pa.

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Summary Prolonged waterflooding or polymer flooding in oil fields often exacerbates reservoir heterogeneity, leading to premature water breakthrough and high water cut, which significantly hinders efficient oilfield development. To address this issue, polymer gel particles have been prescribed to enhance sweep efficiency and augment waterflooding recovery by plugging preferential pathways within the reservoir. However, inherent weaknesses of polymer gel particles, such as fast water absorption and expansion rates in the initial stage and low post-expansion rates, make it difficult to balance i

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Weijun, Liu. "Preparation of core-shell polymeric nanocapsules containing liquid cores via redox interfacial-initiated microemulsion polymerization." e-Polymers 10, no. 1 (2010). http://dx.doi.org/10.1515/epoly.2010.10.1.1127.

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AbstractIn this work, polystyrene (PSt) nanocapsules were successfully prepared by one-stage redox Interfacial-initiated inversed micro-emulsion polymerization of styrene (St), the cumene hydroperoxide (CHPO) and tetraethylenepentamine (TEPA) as the redox initiation pairs. The water-soluble TEPA acted as the reducing component and the oil-soluble CHPO as the oxidant component of the redox initiation system. The primary radicals were produced mainly at the oil/water interface to initiate the polymerization of styrene (St). Core-shell polymeric PSt nanocapsules were obtained by one-stage polymer

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Tiban Anrango, Bryan Andres, Mohinder Maheshbhai Naiya, Josh Van Dongen, Olivia Matich, Catherine P. Whitby, and Jack L. Y. Chen. "Nanoprecipitation to produce hydrophobic cellulose nanospheres for water-in-oil Pickering emulsions." Cellulose, June 12, 2024. http://dx.doi.org/10.1007/s10570-024-05983-w.

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AbstractIn recent years, there has been growing interest in replacing petroleum-based water-in-oil (W/O) emulsifiers with sustainable and less toxic natural materials. Pickering emulsifiers are considered well-suited candidates due to their high interfacial activity and the ability to form emulsions with long-term stability. However, only sporadic examples of natural materials have been considered as inverse Pickering emulsifiers. This study describes the synthesis of a series of hydrophobic cellulose nanospheres by bulk modification with acyl groups of different chain lengths followed by nano

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El Moudny, S., M. Benhamou, M. Badia, and M. Ossmani. "Extensive study of cage effect and subdiffusion in Pickering emulsions using molecular dynamics simulations." OAJ Materials and Devices 3, no. 1 (2018). http://dx.doi.org/10.23647/ca.md20182404.

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In this work, we aim at an extensive study of the diffusion phenomenon of oil-droplets dispersed in water onto which are strongly adsorbed charged point-like particles (Pickering emulsions). This diffusion that originates from multiple collisions with the molecules of water, is anomalous, due to the presence of relatively strong correlations between the moving oil-droplets. Using Molecular Dynamic simulation, with a pair-potential of Sogami-Ise type, we first observe that the random walkers execute a normal diffusion, at intermediate time, followed by a slow diffusion (subdiffusion) we attribu

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Yaghmur, Anan, Saleh Lotfi, Sarah Atoussa Ariabod, Gizem Bor, Mark Gontsarik, and Stefan Salentinig. "Internal Lamellar and Inverse Hexagonal Liquid Crystalline Phases During the Digestion of Krill and Astaxanthin Oil-in-Water Emulsions." Frontiers in Bioengineering and Biotechnology 7 (December 5, 2019). http://dx.doi.org/10.3389/fbioe.2019.00384.

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